242148102490891 has 2 divisors, whose sum is σ = 242148102490892. Its totient is φ = 242148102490890.

The previous prime is 242148102490859. The next prime is 242148102490907. The reversal of 242148102490891 is 198094201841242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242148102490891 - 2⁵ = 242148102490859 is a prime.

It is not a weakly prime, because it can be changed into another prime (242148102490391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121074051245445 + 121074051245446.

It is an arithmetic number, because the mean of its divisors is an integer number (121074051245446).

Almost surely, 2^{242148102490891} is an apocalyptic number.

242148102490891 is a deficient number, since it is larger than the sum of its proper divisors (1).

242148102490891 is an equidigital number, since it uses as much as digits as its factorization.

242148102490891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 242148102490891 in words is "two hundred forty-two trillion, one hundred forty-eight billion, one hundred two million, four hundred ninety thousand, eight hundred ninety-one".